How should a chest seal be applied?

The proper application of a chest seal involves several critical steps to ensure it functions effectively as a method to prevent air from entering the chest cavity in the case of a pneumothorax. Wiping off any blood or debris helps to ensure a clean surface for adhesion, which is essential for the seal to stick properly and create an airtight barrier.

Applying the seal during exhalation allows the escape of air and helps in positioning the seal correctly over the wound. It is crucial to tape down all four sides of the chest seal to create a secure and effective occlusive seal. This method prevents any air from entering the pleural space while allowing the lung to re-expand, which can be vital for the patient’s recovery.

The options that suggest applying the seal on inhale or only taping two sides do not adequately ensure an airtight seal, which could lead to complications, such as worsening a potential pneumothorax. Similarly, applying the seal only to exit wounds or directly onto the wound without preparation may not provide the necessary effectiveness and risks contamination or failing to adhere properly.